Teltron Tube - Maltese Cross
Product Code : EL-AS-10814
Quick Answer: Teltron Tube - Maltese Cross is a high-vacuum electron tube that projects the shadow of a metal Maltese cross onto a fluorescent screen, demonstrating the linear propagation of electrons without applied fields.
Last updated: October 2026
Key Features
- Spherical glass body with cylindrical neck and phosphor-coated screen
- Diode electron gun with filament and cylindrical anode, wired to 4 mm sockets in the plastic cap
- Metal Maltese cross at the centre of the sphere, connected via a 4 mm plug in a side cap
- Divergent electron gun aimed at a screen partly obscured by the cross
- Optional Helmholtz Coils allow electron optics such as beam focusing to be studied
Technical Specifications
| Specification | Value |
|---|---|
| Anode current | 0.18 mA at 4 kV |
| Maximum anode voltage | 5 kV |
| Maximum filament voltage | 7.5 V AC/DC or less |
About This Product
With no electromagnetic field applied, the cross casts its shadow on the screen, showing that the electrons travel in straight lines. A magnetic field from the optional Helmholtz Coils lets students study electron optics such as beam focusing. Operation needs a universal stand, an EHT power supply for the anode with 3 EHT experiment leads, a bench power supply for the filament and 4 mm leads, plus a college power supply unit if the optional coils are used. Export supply of the Teltron Tube - Maltese Cross can be arranged to laboratories and schools in United Arab Emirates, Malaysia, Nicaragua, Kenya and Brazil.
Frequently Asked Questions
Q1. Are Helmholtz Coils required?
They are optional. Adding them, powered by a college power supply unit, allows beam focusing and other electron optics to be studied.
Related: Atomic Structure, Teltron Tube - Electron Diffraction, Teltron Tube - Deflection.
For a quotation on the Teltron Tube - Maltese Cross, contact School Equipments India.
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